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US 10,294,824 B2Granted
Compressed gas energy storage and restitution system and method
AssigneeIfp Energies Nouvelles
InventorsElena Sanz, Willi Nastoll, Guillaume Vinay, Cecile Plais
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Abstract
The invention comprises at least one gas compressor, at least one compressed gas storage, at least one expander for expanding the compressed gas for generating energy, and at least one heat storage, wherein the heat storage comprises a staged arrangement at least two fixed beds of heat storage particles and at least one discontinuity in a thermal gradient located between two adjacent beds.
Claims21
A compressed gas energy storage and restoration system comprising:
- at least one gas compressor for compressing gas with each gas compressor providing heated compressed gas;
- at least one compressed gas storage for storing compressed gas from the at least one gas compressor from which heat produced by compression has been removed;
- at least one heat storage, each heat storage storing heat absorbed from the heated compressed gas, the at least one heat storage comprising a staged arrangement containing particles of a phase change material disposed in at least two fixed beds, at least two adjacent fixed beds of the staged arrangement containing particles of the phase change material with the particles of each adjacent fixed bed having a different melting point which creates a discontinuity in a thermal gradient disposed between the at least two adjacent beds and the particles of the phase change material of the at least one heat storage heating the compressed gas stored in the at least one compressed gas storage;
- and
- at least one expander for producing energy from the compressed gas after heating of the stored compressed gas with the heat stored in the at least one heat storage;
- and wherein the at least two adjacent fixed beds of particles of the phase change material are separated by a wall permeable to the gas.
3 more elements
A compressed gas energy storage and restoration method comprising:
- compressing gas with at least one compressor to provide heated compressed gas which is stored in at least one compressed gas storage after heat has been removed from the heated compressed gas;
- storing the heat absorbed from the heated compressed gas in at least one heat storage, the at least heat storage comprising a staged arrangement containing particles of a phase change material disposed in at least two fixed beds, at least two adjacent fixed beds of the staged arrangement containing particles of the phase change material with the particles of each adjacent bed having a different melting point which creates a discontinuity in a thermal gradient disposed between the at least two adjacent beds and the particles of the phase change material of the at least one heat storage;
- heating the compressed gas with the heat stored in the at least one heat storage;
- and
- expanding the heated compressed gas with at least one expander to produce energy;
- and wherein the at least two adjacent fixed beds of particles of the phase change material are separated by a wall permeable to the gas.
3 more elements
Dependencies are inferred from the claim text.